Home / 757,885.78-1,045,633.96-540,128.75

Finding the Fourth Proportional to 757,885.78, 1,045,633.96 and 540,128.75

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Solution

The fourth proportional to 757,885.78, 1,045,633.96 and 540,128.75 is: 745,200.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    757,885.78 : 1,045,633.96 = 540,128.75 : x
  2. Step 2: Convert to fraction form
    757,885.78/1,045,633.96 = 540,128.75/x
  3. Step 3: Cross multiply
    757,885.78x = 1,045,633.96 × 540,128.75
  4. Step 4: Simplify right side
    757,885.78x = 564,776,957,193.86
  5. Step 5: Solve for x
    x = 564,776,957,193.86/757,885.78
  6. Step 6: Final answer
    x = 745,200.63

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.